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If |a+b|-c < d
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15 Sep 2021, 17:37
15 Sep 2021, 17:37
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Question Stats:
28% (01:06) correct
71% (01:24) wrong based on 14 sessions
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If \(|a+b|-c < d\), which of the following must be true?
Indicate all that apply.
a.) \(a+b > 0\)
b.) \(d > 0\) whenever \(c < 0\)
c.) \(d+c > 0\)
Indicate all that apply.
a.) \(a+b > 0\)
b.) \(d > 0\) whenever \(c < 0\)
c.) \(d+c > 0\)
Re: If |a+b|-c < d
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16 Sep 2021, 19:48
16 Sep 2021, 19:48
2
\(|a+b|-c < d\)
\(c + d > |a + b|\)
RHS will always be +ve so \(c + d > 0\)
That means that whenever \(c < 0, d\) will be \(> 0\) as we need \(c + d > 0\)
Answer B C
\(c + d > |a + b|\)
RHS will always be +ve so \(c + d > 0\)
That means that whenever \(c < 0, d\) will be \(> 0\) as we need \(c + d > 0\)
Answer B C
Re: If |a+b|-c < d
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17 Sep 2021, 09:49
17 Sep 2021, 09:49
Can't d+c=0? Then we can eliminate option C as well.
